CN208602689U

CN208602689U - A kind of air propeller

Info

Publication number: CN208602689U
Application number: CN201820924639.2U
Authority: CN
Inventors: 赵忠东
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-06-14
Filing date: 2018-06-14
Publication date: 2019-03-15
Anticipated expiration: 2028-06-14

Abstract

The utility model proposes a kind of air propellers, including propeller hub and blade, the blade is divided into via area and seal area, the via area is equipped at least one airflow hole, the utility model proposes air propeller can effectively reduce the flow-disturbing that blade back air-flow can generate in revolving speed increase, effectively improve the efficiency of propeller, reduce power consumption, and the working efficiency of propeller itself is not influenced, air-flow through-hole can effectively be reduced the flow-disturbing at back simultaneously, considerably increase the whole work efficiency of propeller, and material used is cheap, production cost can be substantially reduced, material is durable, service life also greatly increases.

Description

A kind of air propeller

Technical field

The utility model relates to field of engineering technology, and in particular to a kind of air propeller.

Background technique

In general, propeller be used in as aircraft, ship, turbine equipment in it is other similar with extensive multiplicity configuration Device, for transmitting power by converting rotational motion to thrust or fluid flowing, air propeller is by blade in sky Rotation converts mechanical energy in the device of propulsive force or lift in gas.

Propeller is usually made of two or more blades for being connected to newel or hub, with blade bending, is turned round Bent or other deformations, generate pressure difference between the forward and backward surface of blade, to push fluid (such as water or air) to flow through Blade, shape, pitch and the distortion of blade are all factors of working efficiency of propeller.

And when propeller keeps certain screw pitch, because the propeller of fixed pitch can not change screw pitch to change The blade angle of attack cannot efficiently work under every speed state, and when revolving speed increases, blade back air-flow can generate flow-disturbing, and And sharply deteriorate, so as to cause efficiency decline, so constant pitch airscrew, in different rotating speeds, efficiency is difficult to take into account, not only significantly It reduces efficiency and also increases energy consumption, while decreasing service life, wherein Fig. 6 illustrates traditional propeller normal work When, the flow direction of air-flow, the flow-disturbing at blade back seriously affects the flowing of fluid.

Summary of the invention

In order to overcome at least one of the drawbacks of the prior art described above (deficiency), provide a kind of can effectively subtract the utility model Few back flow-disturbing reduces the air propeller that energy consumption improves efficiency.

In order to solve the above technical problems, the technical solution of the utility model is as follows:

A kind of air propeller, including propeller hub and blade, the blade are divided into via area and seal area, and the via area is set There is airflow hole, the airflow hole is divided into import, outlet and airflow channel, and import is located at blade lower surface, and outlet is located on blade Surface, the airflow hole at least one, the lower surface air-flow of blade can be taken to upper surface at runtime, to avoid in revolving speed Blade back air-flow can generate flow-disturbing when increase, and sharply deteriorate, so as to cause efficiency decline.

Further, the airflow hole is several, be set to blade forward position backward 1/10 to rear between forward 1/10, pass through Via area is divided, airflow hole is concentrated in via area, the flow-disturbing at blade back effectively can be intensively reduced.

Further, the airflow hole is divided into import, airflow channel and outlet according to the direction of air-flow, the airflow channel The area summation of minimum cross-section accounts for the 1-20% of the blade upper and lower surfaces gross area, and the size of airflow channel can be effectively controlled gas The size of stream, air-flow pass through the speed of airflow hole, and when airflow channel accounts for, blade area is excessive, will be greatly reduced the effect of propeller The effect for converting rotational motion to thrust or fluid flowing to transmit power is not achieved, when airflow channel accounts for blade area in rate Too small, air-flow is difficult to pass through, and the effect for reducing back flow-disturbing is not achieved.

Further, the cross-sectional shape of airflow channel is round or rectangular or irregular shape, can be carried out according to practical application Adjustment.

Further, the airflow hole is round or rectangular or irregular shape in the export and import shape of blade surface, into It mouthful can be modified according to practical situations with the shape exported, can be used and crack or aperture or irregular shape.

Further, material used in the blade and propeller hub is metal or timber or plastics or composite material, entire propeller It is more durable, service life can be greatly improved.

Compared with prior art, the beneficial effect of technical solutions of the utility model is:

(1) the utility model proposes air propeller can effectively reduce the blade back air-flow in revolving speed increase and can generate Flow-disturbing, effectively improve the service efficiency of air propeller, improve the efficiency of propeller, reduce power consumption.

(2) cross-sectional area for the airflow hole being added due to the utility model accounts for the 1-20% of entire blade area, not The working efficiency of propeller itself can be reduced, and air-flow through-hole can effectively greatly reduce the flow-disturbing at back, increase spiral The working efficiency of paddle.

(3) material used in the utility model is metal or timber or plastics or composite material, material price used It is cheap, production cost can be substantially reduced, and material is durable, service life also greatly increases.

Detailed description of the invention

Fig. 1 is air propeller region division structural schematic diagram.

Fig. 2 is air propeller structural schematic diagram.

Fig. 3 is blade section face figure.

Fig. 4 is airflow hole cross-sectional view.

Fig. 5 is 2 schematic diagram of embodiment.

Fig. 6 is traditional blade surface air-flow flow graph.

Fig. 7 the application blade surface air-flow flow graph.

Specific embodiment

The attached figures are only used for illustrative purposes and cannot be understood as limitating the patent；

In order to better illustrate this embodiment, the certain components of attached drawing have omission, zoom in or out, and do not represent actual product Size；

To those skilled in the art, it is to be understood that certain known features and its explanation, which may be omitted, in attached drawing 's.

In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified Dress ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, be also possible to be indirectly connected with by intermediary, it can be with Say the connection inside two elements.For the ordinary skill in the art, it can understand that above-mentioned term exists with concrete condition The concrete meaning of the utility model.

The technical solution of the utility model is described further with reference to the accompanying drawings and examples.

Embodiment 1

The utility model proposes a kind of air propellers, as shown in Figure 1-3, include propeller hub 1 and blade 2, wherein blade 2 1 both ends of propeller hub are fixed on, are equipped with two pieces of blades 1 altogether, the quantity and size of blade 1 can be adjusted according to the demand of practical application, Be divided into two regions in blade 2, one is seal area 3, and one is via area 4, wherein via area 42 forward position of blade backward 1/10 between rear edge forward 1/10, i.e., two edges that blade is connect with propeller hub are lead and trail edges, and via area 4 accounts for blade 4 Area is 80%, and airflow hole 5 is equipped on via area 4, and 5 energy Arbitrary distribution of airflow hole sets via area 4, allow on via area The concentration of airflow hole 5 is in order to allow the flow-disturbing at 2 back side of blade to get rid of, and flow-disturbing is also concentrated mainly on the via area 4 of blade 2 The back side.

Airflow hole 5 includes import, airflow channel and exports, and airflow hole 5 is in the import on 2 surface of blade and the shape of outlet It can be designed as round or rectangular or irregular shape, for example, the shape of blade 2 import of overdraught hole and outlet as shown in Figure 2 Shape is circle, has set 16 airflow holes 5 altogether.

It, can be according to actually answering in addition, the shape of the airflow channel of airflow hole 5 may be round or rectangular or irregular shape It is adjusted with demand, as shown in Figure 3-4, the area summation of the minimum cross-section of the airflow channel of all airflow holes 5 accounts for blade 2 The 1-20% of the upper and lower surfaces gross area can fast and effeciently remove flow-disturbing using such structure, can greatly increase propeller Working efficiency.

In addition to this, material used in the entire propeller of the utility model is metal or timber or plastics or composite material, Suitable for different occasions, it is widely used.

Embodiment 2

Embodiment 2 uses all technical features of embodiment 1, and difference is, import of the airflow hole 5 on 2 surface of blade It is rectangle with the shape of outlet, a similar gap has set 4 airflow holes 5 altogether, can be with as shown in figure 5, in practical application The shape of import and the outlet of airflow hole 5 is adjusted according to demand.

As described in the prior art, when propeller works normally, by converting rotational motion to thrust or fluid stream It moves to transmit power, as shown in Figure 6, arrow is the flow direction of air-flow, and circular arrow is flow-disturbing, in no airflow hole 5 When, because the propeller of fixed pitch can not change screw pitch to change the blade angle of attack, the blade back air-flow meeting when revolving speed increases Flow-disturbing is generated, the air-flow separation blade surface both sticked, the pressure difference of blade upper and lower surface becomes smaller, and sharply deteriorates, to lead Cause efficiency decline.

And after airflow hole appropriate is added in the application, the case where this deterioration can be improved, prolong the separation of upper surface air-flow It is slow, the flow-disturbing at blade back is mitigated or reduced, the working efficiency of the propeller under different rotating speeds is improved, power consumption is reduced, such as Fig. 7 institute Show.

It can could see from Fig. 6 and Fig. 7 comparison, after airflow hole is added, not only can effectively inhibit flow-disturbing, prevent flow-disturbing from weakening Working efficiency, while flow-disturbing can be converted to the transmission power of rotary motion generation, increase working efficiency, kills two birds with one stone.

Entire air propeller can according to the actual application, to the shape of the quantity of blade, the size of blade or blade It adjusts.

Finally, it is stated that above embodiments are merely intended for describing the technical solutions of the present application, but not for limiting the present application, although ginseng The utility model is described in detail according to preferred embodiment, those skilled in the art should understand that, it can be to this The technical solution of utility model is modified or replaced equivalently, without departing from the objective and model of technical solutions of the utility model It encloses, should all cover in the scope of the claims of the utility model.

Claims

1. a kind of air propeller, which is characterized in that including propeller hub and blade, the blade is divided into via area and seal area, institute Via area is stated equipped at least one airflow hole, the airflow hole is set to blade forward position and 1/10 arrives afterwards between forward 1/10 backward, The airflow hole is divided into import, airflow channel and outlet according to the direction of air-flow, and the import is located at blade lower surface, and outlet is set In blade back, the area summation of the minimum cross-section of the airflow channel accounts for the 1-20% of the blade upper and lower surfaces gross area.

2. air propeller according to claim 1, which is characterized in that the shape of the cross section of the airflow channel is circle Or rectangular or irregular shape.

3. air propeller according to claim 1, which is characterized in that the entry shape of the airflow hole is round or rectangular Or irregular shape.

4. air propeller according to claim 1, which is characterized in that the outlet shapes of the airflow hole are round or rectangular Or irregular shape.

5. any one of -4 air propeller according to claim 1, which is characterized in that material used in the blade and propeller hub is Metal or timber or plastics or composite material.